/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/NiagaraParameterMapHistory.h
In some cases, we don't want all the variables encountered in a traversal. In this case, you can filter the map history to only include variables that are relevant to the specific script type. For instance, a System script doesn't really care about the Particles namespace.
void EnableScriptAllowList ( bool bInEnable, [ENiagaraScriptUsage](API\Plugins\Niagara\ENiagaraScriptUsage) InScriptType )